EP 0237062 A2 19870916 - Container for photographic film cartridge.
Title (en)
Container for photographic film cartridge.
Title (de)
Dose für photographische Filmpatrone.
Title (fr)
Boîte pour cartouche de film photographique.
Publication
Application
Priority
JP 5266086 A 19860312
Abstract (en)
In a container for a photographic film cartridge having a body and a cap fitted to said body, the improvement comprising that said cap is molded from a resin containing more than 20% by weight of a low-pressure linear low-density polyethylene which is a copolymer of ethylene and butene-1 and has a density of 0.90 to 0.93 g/cm<3> and a melt index of 8 to 60 g/10 minutes. <??>In the case of the molding resin for the cap of the invention, heat resistance is high, and this resin smoothly flow in a molding machine though temperature of the molten resin is relatively low. Accordingly, coloring troubles hardly occur, and molding cycle can be shortened. This resin is also superior in injection moldability, and molding troubles such as roping, camber, kink and deformation are rare. Mold shrinkage is also little. Since fitting strength of the cap and container body is large, the cap is scarcely detached during packaging process. Water vapor permeability of the resin of the cap is little, and moistureproofness of the container is high.
A container for a photographic film cartridge comprises a body with an improved cap moulded from a resin contg. greater than 20 wt.% low pressure LDPE(I), which is a copolymer of ethylene/ butene-1 having density 0.90-0.93 g/cc and melt index 8-60 g/10 min. The resin may also contain high pressure branched LDPE (II), having density 0.90 - 0.93 g/cc and MI 4-50 g/10 min.; 0.001-1 wt.% of phenolic, S-contg. or P-contg. antioxidants; 0.01 - 1 wt.% lubri-cant; and a colourant such as carbon black.
IPC 1-7
IPC 8 full level
C08L 23/06 (2006.01); C08L 23/08 (2006.01); G03C 3/00 (2006.01)
CPC (source: EP)
C08L 23/06 (2013.01); C08L 23/0815 (2013.01); G03C 3/00 (2013.01)
Designated contracting state (EPC)
DE NL
DOCDB simple family (publication)
EP 0237062 A2 19870916; EP 0237062 A3 19880720; EP 0237062 B1 19920603; DE 3779453 D1 19920709; DE 3779453 T2 19930128; JP H0652398 B2 19940706; JP S62210457 A 19870916
DOCDB simple family (application)
EP 87103558 A 19870311; DE 3779453 T 19870311; JP 5266086 A 19860312